Weistec tune

Finally i did install my other ECU with the Weistec tune(i have 2 ECU's)on my SLS,I got scared last night by the new power.The ESP was flashing all the way to 140 KPH when i let of.Temperature was 34c.mods are,SuperSprint headers,sport primary cats , X pipe and BMC filters.Would love to try with a Mclaren one day or a Porsche turbo S.Any thoughts?